2-1
2.1
Introduction
WARNING
The procedures in this section are in-
tended only for qualified service person-
nel. Do not perform these procedures
unless you are qualified to do so. Failure
to recognize and observe normal safety
precautions could result in personal in-
jury or death.
This section includes information on making connections to
the Model 7016A and installing the card in the Model 7001/
7002 Switch System.
2.2
Handling precautions
To maintain high-impedance isolation between channels,
care should be taken when handling the card to avoid con-
tamination from such foreign materials as body oils. Such
contamination can reduce isolation resistance. To avoid pos-
sible contamination, always grasp the card by the side edges
or covers. Do not touch board surfaces, components, or con-
nector insulators.
Dirt build-up over a period of time is another possible source
of contamination. To avoid this problem, operate the card in
a clean environment. If the card becomes contaminated, it
should be thoroughly cleaned as explained in paragraph 4.2.
2.3
Connections
This paragraph provides the information necessary to con-
nect your external test circuitry to the Model 7016A.
2.3.1 Simplified schematic
Figure 2-1 shows a simplified schematic diagram of the
Model 7016A. The card is arranged into two separate multi-
plexers, each with four channels.
2.3.2 Card configuration
Figure 2-2 shows the general configuration of the Model
7016A. Connectors include:
IN 1-8 (channels 1-8):
Each input is equipped with an SMA
coaxial connector. The center conductor is the signal path,
while the outer shell connected to signal common.
OUT A and OUT B:
Each multiplexer is equipped with an
SMA coaxial connector. The center conductor is the signal
path, and the shell is connected to signal common.
Termination jacks:
Each channel has an SMB coaxial ter-
minator jack. User-supplied 50
Ω
terminators can be con-
nected to these jacks when a 50
Ω
nominal input impedance
must be maintained for off channels.